JD21/33-85B

$21.47 ea
Quantity Price (USD)
1 $21.47 ea
10 $12.88 ea
25 $10.74 ea
50 $9.66 ea
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Ruland JD21/33-85B, Jaw Coupling Spider, 85 Shore A Blue, 1.313" (33.3mm) OD

PRODUCT SPECIFICATIONS

Ruland JD21/33-85B is a zero-backlash jaw coupling spider designed to fit Ruland hubs that have an OD of 1.313" (33.3mm). It is a component in a three-piece design consisiting of two aluminum hubs and an elastomeric insert called the spider creating a lightweight low inertia coupling capable of speeds up to 8,000 RPM. This three-piece design allows for a highly customizable coupling that easily combines clamp or set screw hubs with inch, metric, keyed, and keyless bores. JD21/33-85B is made from polyurethane and has 85 Shore A hardness allowing for the highest level of dampening with the lowest torque capacity. Ruland jaw couplings have a balanced design for reduced vibration at high speeds. Hardware is metric and tests beyond DIN 912 12.9 standards for maximum torque capabilities. JD21/33-85B is RoHS2 and REACH compliant.

PRODUCT SPECIFICATIONS

Dimensions

Outer Diameter OD

1.313 in / 33.3 mm

Performance Specifications

Nominal Torque

18 in-lb, 2.0 Nm

Angular Misalignment

1.0°

Peak Torque

36 in-lb, 4.1 Nm

Parallel Misalignment

0.006 in, 0.15 mm

Torsional Stiffness

0.075 Deg/in-lb, 0.662 Deg/Nm

Axial Motion

0.03 in, 0.76 mm

Maximum Speed

8,000 RPM

Additional Information

Weight (lbs.)

0.0140

Temperature

-10°F to 180°F
-23°C to 82°C

Material Specification

Polyurethane 85 Shore A BLUE

Finish Specification

Plain

Manufacturer

Ruland Manufacturing

UPC

63452906903

Country of Origin

USA

Product Notes

Note 1

Performance ratings are for guidance only. The user must determine suitability for a particular application.

Note 2

Torque ratings for the couplings are based on the physical limitations/failure point of the spiders. Under normal/typical conditions the hubs are capable of holding up to the nominal torque of the spiders. In some cases, especially when the smallest standard bores are used or where shafts are undersized, slippage on the shaft is possible below the nominal torque of the spiders. Keyways are available to provide additional torque capacity in the shaft/hub connection when required. Please consult technical support for more assistance.

CERTIFICATIONS/STANDARDS
ISO 9001:2015

Certified

Conflict Minerals

Compliant

RoHS3

Compliant

REACH

Compliant

CUSTOMER REVIEWS

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